The bolt holes on the smokebox for the whistle steam supply cover were drilled and tapped 10BA.
The elbow for live steam supply to the valve was also made up out of brass. This will go insode the smokebox to bring the plumbing forward for a union where it can be accessed.
The hole in the smokebox was opened out to clear the whistle supply plumbing. This was done with a rotary burr in the drill and files.
As mentioned last blog I have also included some pics of the whistle valve lever and spindle. Basically works the same as a normal model whistle valve pushing a 1/8" ball off a seat.
Happy steaming!
Nigel
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